The following are few common messages associated with the dciman32.dll missing error. “Cannot find the file dciman32.dll” “The file dciman32.dll is missing.” “This application has failed to start because dciman32.dll was not found” dciman32.dll is a system file related to Display Control Interface (DCI). Windows uses it to improve display performance during direct video memory access. This file is responsible for smooth display, and plays a critical role in graphic intensive programs like games, CAD (Computer Aided Design) applications and graphics editing software. Fortunately, Windows has a cached copy of the system files in the folder at %WinDir%\System32\dllcache. Additionally, Windows has a utility that checks all system files and repairs or replaces the damaged or missing system files with the cached copy. To repair dciman32.dll (or any other system file for that matter) using the System File Checker (SFC), follow these steps. Hold the Windows Key and  Press X. Choose Command Prompt (Admin) if you are on Windows 8 or 10. If you are on Windows Vista or 7, Click Start -> type cmd, right click cmd and choose Run As Administrator. In the command prompt, type the following and press Enter. This command will tell the SFC Tool to check all system files for integrity. If the SFC tool finds any problem, it will repair system files. If SFC cannot repair the files then use the Deployment Imaging and Servicing Management (DISM) tool. If you don’t understand this, then just proceed with the directions below. In the command prompt window, type the following command. Then type Press Enter to scan and repair system files using online image source.

How to Fix Corrupt Bootres.dll File on Windows 10?FIX: Repair Corrupt Opencl.dll in Windows 10Fix: Service Registration is Missing or Corrupt on Windows 10Fix: Cnext.exe cannot start because MSVCP120.dll or Qt5Core.dll is missing